ML18019A747
| ML18019A747 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 03/21/1986 |
| From: | Rubenstein L Office of Nuclear Reactor Regulation |
| To: | Utley E CAROLINA POWER & LIGHT CO. |
| References | |
| NUDOCS 8603270176 | |
| Download: ML18019A747 (4) | |
Text
Docket No. 50-400 Mr. E.
E. Utley, Senior Executive Vice President Power Supply and Engineering and Construction Carolina Power and Light Company Post Office Box 1551 Raleigh, North Carolina 27602
Dear Mr. Utley:
SUBJECT:
REPORTS ON PRA INSIGHTS I 886 DISTRIBUTION NRC PDR Local PDR PADg2 Rdg T. Novak OELD E. Jordan B. Grimes J. Partlow B. Buckley I. Lee ACRS (10)
Gray File Enclosed are two draft reports concerning technical insights gained from Probabilistic Risk Assessments (PRAs).
These reports are the outcome of an ongoing effort to make available and utilize in numerous technical and managerial activities the information in PRAs regarding the factors which dominate the risk associated with nuclear power plants.
This effort includes identification of the features of design or operational practices which have been found to be important to safety in the types of plants which have been subjected to risk assessments.
In addition, the section on insights into PRA methodologies focuses on areas which are sensitive to the results and the overall perception of plant weaknesses and vulnerabilities.
In particular, these reports contain discussions of:
general insights on plant strengths and weaknesses gained from PRAs; the contribution to core melt frequency from classes of sequences induced by various initiating events; modifications, both hardware and procedural, which have been implemented to address problems identified in the conduct or as a result of PRAs; insights into PRA methodologies; and the contribution to measures of. risk (core melt frequency and consequences of radioactive releases) from systems, components and events.
These reports are being provided to you, as well as all other licensees, in' advance of formal publication for your information.
Your comments and
=
'uggestions are welcome on these reports.
Sincerely,
Enclosures:
As stated cc w/o enclosures:
See next page Lester S. Rubenstein, Director PWR Project Directorate 82 Division of PWR Licensing-A PM:
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Mr. E.
E. Utley Carolina Power 5 Light Company Shearon Harris CC:
George F. Trowbridge, Esq.
Shaw, Pittman, Potts 5 Trowbridge 1800 M Street, NW Washington, DC 20036 Richard E. Jones, Esq.
General Counsel Carolina Power 5 Light Company 411 Fayetteville Street Mall Raleigh, North Carolina 27602 Jo Anne Sanford, Esq.
Special Deputy Attorney General State of North Carolina Post Office Box 629
- Raleigh, North Carolina 27602 Resident Inspector/Harris NPS c/o U.S. Nuclear Regulatory Commission Route I, Box 315B New Hill, North Carolina 27562 Charles D. Barham, Jr.,
Esq.
Vice President 8 Senior Counsel Carolina Power 5 Light Company Post Office Box 1551
- Raleigh, North Carolina 27602 Mr. John Runkle, Executive Coordinator Conservation Council of North Carolina 307 Granville Road Chapel Hill, North Carolina 27514 Mr. Wells Eddleman 812 Yancey Street Durham, North Carolina 27701 Dr. Linda Little Gove'rnor's Waste Management Board 513 Albemarle Building 375 North Salisbury Street Raleigh, North Carolina 27611 Mr. George Jackson, Secretary Environmental Law Project School of Law, 064-A Univeristy of North Carolina Chapel Hill, North Carolina 27514 Mr. Travis Payne, Esq.
723 W. Johnson Street Post Office Box 12643
- Raleigh, North Carolina 27605 Mr. Daniel F.
Read CHANGE Post Office Box 2151
- Raleigh, North Carolina 27602 Bradley W. Jones, Esq.
U.S. Nuclear Regulatory Comm.
Region II 101 Marietta Street Atlanta, Georgia 30303 Richard D. Wilson, M. D.
725 Hunter Street Apex, North Carolina 27502 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street Suite 2900 Atlanta, Georgia 30303 Mr. Robert P. Gruber Executive Director Public Staff -
NCUC Post Office Box 991
- Raleigh, North Carolina 27607
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